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Finding the Fourth Proportional to 28,791, 43,167.94 and 12,146.58

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Solution

The fourth proportional to 28,791, 43,167.94 and 12,146.58 is: 18,212.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791 : 43,167.94 = 12,146.58 : x
  2. Step 2: Convert to fraction form
    28,791/43,167.94 = 12,146.58/x
  3. Step 3: Cross multiply
    28,791x = 43,167.94 × 12,146.58
  4. Step 4: Simplify right side
    28,791x = 524,342,836.65
  5. Step 5: Solve for x
    x = 524,342,836.65/28,791
  6. Step 6: Final answer
    x = 18,212.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.